This book provides new approaches to major problems in the philosophy of logic, language, and mind. It covers issues such as self-reference, logical abductivism and pluralism, logical truth, modal logic and its applications, Kripke-completeness, theories of meaning, theories of mind, the rationality of beliefs, mental integrity, or the nature of understanding. These problems are discussed by top researchers in their fields allowing the reader to become acquainted with both cutting-edge analyses of major philosophical problems and the illuminating interpretations and solutions of them. The chapters in the volume are dedicated to Professor Mircea Dumitru, who worked on these and related philosophical problems and further promoted scientific research in these fields. At the same time, he put a lot of effort into making the topics in these fields accessible for a broader audience. The book contains essential reading for scholars and advanced students in philosophy of logic, language, mind, and for all those interested in analytic philosophy.

Constantin C. Brîncuș is currently a researcher in the Department of Logic and Metaphysics of the Institute of Philosophy and Psychology, Romanian Academy and affiliated professor at the Faculty of Philosophy, University of Bucharest. His research interests are mainly in logic and its philosophy, epistemology, philosophy of mathematics, general philosophy of science and value theory. Recent publications include “Categoricity for an inferential ω-logic and in Lω1ω” (2026, with John T. Baldwin), “Carnapian Frameworks and Categoricity of Arithmetic via Inferential ω-logics” (2026, with John T. Baldwin), “Categorical Quantification” in Bulletin of Symbolic Logic (2024), “Inferential Quantification and the ω-Rule” in Perspectives on Deduction, Synthese Library (2024) “Are the Open-Ended Rules for Negation Categorical?” in Synthese (2021), “Logical Maximalism in the Empirical Sciences” (Springer, 2021), “Philosophical Accounts of First-Order Logical Truths” in Acta Analitica (2019).